Noah Petherbridge
1523deeb9c
* Implement the handler code for `return false` when actors are colliding with each other and wish to act like solid walls. * The locked doors will `return false` when they're closed and the colliding actor does not have the matching key. * Add arbitrary key/value storage to Actors. The colored keys will set an actor value "key:%TITLE%" on the one who touched the key before destroying itself. The colored doors check that key when touched to decide whether to open. * The trapdoor now only opens if you're touching it from the top (your overlap box Y value is 0), but if you touch it from below and the door is closed, it acts like a solid object.
112 lines
2.6 KiB
Go
112 lines
2.6 KiB
Go
// Package debugging contains useful methods for debugging the app, safely
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// isolated from the rest of the app's packages.
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package debugging
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import (
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"fmt"
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"runtime"
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"strings"
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)
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// Configurable variables for the stack tracer functions.
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var (
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// StackDepth is the depth that Callers() will crawl up the call stack. This
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// variable is configurable.
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StackDepth = 20
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// StopAt is the function name to stop the tracebacks at. Set to a blank
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// string to not stop and trace all the way up to `runtime.goexit` or
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// wherever.
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StopAt = "main.main"
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)
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// Minimum depth given to runtime.Caller() so that the call stacks will exclude
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// the call to debugging.Caller() itself -- so this debug module won't debug its
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// own function calls in the tracebacks.
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const minDepth = 2
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// Caller returns the filename and line number that called the calling
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// function.
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func Caller() string {
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if pc, file, no, ok := runtime.Caller(minDepth); ok {
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frames := runtime.CallersFrames([]uintptr{pc})
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frame, _ := frames.Next()
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if frame.Function != "" {
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return fmt.Sprintf("%s#%d: %s()",
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frame.File,
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frame.Line,
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frame.Function,
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)
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}
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return fmt.Sprintf("%s#%d",
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file,
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no,
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)
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}
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return "[no caller information]"
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}
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// Callers returns an array of all the callers of the current function.
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func Callers() []string {
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var (
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callers []string
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pc = make([]uintptr, StackDepth)
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count = runtime.Callers(minDepth, pc)
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)
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pc = pc[:count] // only pass valid program counters to CallersFrames
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var frames = runtime.CallersFrames(pc)
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_ = frames
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// Loop to get frames of the call stack.
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for {
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frame, more := frames.Next()
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callers = append(callers, fmt.Sprintf("%s#%d: %s()",
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frame.File,
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frame.Line,
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frame.Function,
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))
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if StopAt != "" && frame.Function == StopAt {
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break
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}
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if !more {
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break
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}
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}
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return callers
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}
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// StringifyCallers pretty-prints the Callers as a single string with newlines.
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func StringifyCallers() string {
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callers := Callers()
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var result []string
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for i, caller := range callers {
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if i == 0 {
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continue // StringifyCallers() would be the first row, skip it.
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}
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result = append(result, fmt.Sprintf("%d: %s", i, caller))
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}
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return strings.Join(result, "\n")
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}
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// PrintCallers prints the stringified callers directly to STDOUT.
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func PrintCallers() {
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fmt.Println("Call stack (most recent/current function first):")
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for i, caller := range Callers() {
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if i == 0 {
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continue // PrintCallers() would be the first row, skip it.
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}
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fmt.Printf("%d: %s\n", i, caller)
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}
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}
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// Pause until the user hits enter in the console.
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func Pause() {
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var x string
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fmt.Print("Press enter to continue . . .")
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fmt.Scanf("%s", &x)
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}
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